<a nz-popconfirm nzTitle="{{nztitle}}" *ngIf="currentTask==='待提交' || currentTask==='驳回' ||currentTask==='退回';else disableA" (nzOnConfirm)="confirm()"
   (nzOnCancel)="cancel()">{{context}}</a>
<ng-template #disableA>
    <a disabled>{{context}}</a>
</ng-template>
